I've tried both, and neither worked! I think the reason is this:
I don't think the Mac and Linux versions are updated... and it tough to tell if the game is updated because all versions still say v1.0.0
Maybe re-uploading the builds would fix it?
Hey Low Light Games, I just reuploaded each different version for each different chapter. Thanks for telling me about the problem so I could fix it :). If there are any more bugs, please inform me. Otherwise stay tuned for chapter 3 :)